Journal of the Japan Society of Electrical-machining Engineers最新文献_第9页

CO2 Laser Welding of Titanium. 钛的CO2激光焊接。

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-11-25 DOI: 10.2526/JSEME.34.77_8

H. Hagino, S. Noguchi, K. Masui

引用次数: 1

Analysis of Explosive Load on Wire Generated by Discharge of Wire EDM 电火花放电对线材产生的爆炸载荷分析

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-11-25 DOI: 10.2526/JSEME.34.77_22

M. Nakase, H. Obara, T. Ohsumi, M. Hatano

{"title":"Analysis of Explosive Load on Wire Generated by Discharge of Wire EDM","authors":"M. Nakase, H. Obara, T. Ohsumi, M. Hatano","doi":"10.2526/JSEME.34.77_22","DOIUrl":"https://doi.org/10.2526/JSEME.34.77_22","url":null,"abstract":"In this study, the explosive load acting on the wire surface generated by discharge on the rough cut and the finish cut of wire EDM is investigated. The hydrodynamic explosion process in the water-filled gap is numerically analyzed using adiabatic bubble expansion model, and the impulsive load of each discharge acting on the wire surface is calculated. The distribution function of the discharge number on the wire surface is derived and the total load acting on the wire generated by continuous discharges is estimated. Wire deflection caused by the total load is compared with the experimentally obtained wire deflection and also with the wire deflection derived from the simple model, assuming that the impulsive load of each discharge is constant and acts normally on the wire surface. Results show that; 1) the impulsive load vector on the wire surface of each discharge is not normal to the wire surface, 2) the value of impulsive load by each discharge depends on the slammed depth and the location on the wire surface and 3) the results of analysis are able to explain the influence of the skimmed depth on the wire deflection of the finish cut and the rough cut.","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133079252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

ワイヤ放電加工の加工精度に関する基礎的研究(第5報)休止時間制御を用いた小円弧凹コーナR荒加工の加工時間短縮方法电线放电加工加工精度基础研究(第5报)使用休止时间控制的小圆弧凹角R粗加工缩短加工时间的方法

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-11-01 DOI: 10.2526/JSEME.34.77_15

小原治樹, 大竹剛, 今井渉

引用次数: 0

Observation of Quantity of Bubbles in Electrical Discharge Machining Gap 电火花加工间隙气泡量的观察

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-07-31 DOI: 10.2526/JSEME.34.76_18

M. Hiroi, Y. Imai, M. Nakano

{"title":"Observation of Quantity of Bubbles in Electrical Discharge Machining Gap","authors":"M. Hiroi, Y. Imai, M. Nakano","doi":"10.2526/JSEME.34.76_18","DOIUrl":"https://doi.org/10.2526/JSEME.34.76_18","url":null,"abstract":"In order to further improve the machining accuracy and machining speed of electrical discharge machining (EDMing), it is necessary to understand the gap condition during the EDMing process. In this paper, a new method of using ultrasonic waves to measure the gap condition is proposed. First, the possibility that the change in the quantity of bubbles existing in the gap between the electrode and the workpiece could be detected as a change in the attenuation factor of ultrasonic waves is confirmed through a fundamental experiment of the proposed detection method. Second, the method is applied to an actual EDMing process with several machining settings. From these experiments, the dissimilarity of the gap conditions under several EDMing processes is clarified and the fact that the gap is filled with bubbles for most of the machining period is confirmed. Third, a comparative experiment is conducted to investigate the influence of the amount of bubbles in the gap on machining efficiency. As a result of the experiment, it is ascertained that machining with a small amount of bubbles has higher efficiency than machining with a large amount of bubbles. These results provide useful information for constructing the most suitable EDMing control system for improving machining performance.","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125967297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Machining Trouble and its Necessary Solution for EDMed Surface in Die and/or Tool Making 模具和/或刀具加工中电火花表面的加工问题及其必要解决方法

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-07-31 DOI: 10.2526/JSEME.34.76_42

K. Masui, T. Sone, Yukihiro Sato, H. Minami

{"title":"Machining Trouble and its Necessary Solution for EDMed Surface in Die and/or Tool Making","authors":"K. Masui, T. Sone, Yukihiro Sato, H. Minami","doi":"10.2526/JSEME.34.76_42","DOIUrl":"https://doi.org/10.2526/JSEME.34.76_42","url":null,"abstract":"1. はじめに放電加工機はプレス加工やプラスチック成形をはじめ, ダイカストや鍛造などの各種金型製作には, 欠くことのできない加工機として広く使用されている. 元来, 放電加工は, 火花放電による材料の熱的な溶融除去現象を利用するので, 加工された表面には, 母材とは質的に異なった「加工変質層」が形成される. 例えば, 焼入れ鋼や超硬合金の加工では, その表面にマイクロクラックが発生しやすく, 金型としての使用の際に, チッピングや割れなどのトラブルの原因になることがある. 最近の放電加工機は, 高度なNC制御をはじめ, 加工に関する自動化が進んでいるが, 精密な金型の加工においては, こうした加工面に対する性状の把握とともに, 適切な仕上げ処理が必要である. そこで本報では, 形彫り放電加工による金型製作において, 金型の品質や寿命に影響を及ぼすと思われる加工面のトラブル事例とその対策法について紹介する. 2. 形彫り放電加工面のミクロ観察 (合金工具鋼の加工面SKD11)","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124706413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid Prototyping in Japan 日本的快速成型

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-07-31 DOI: 10.2526/JSEME.34.76_8

T. Nakagawa

{"title":"Rapid Prototyping in Japan","authors":"T. Nakagawa","doi":"10.2526/JSEME.34.76_8","DOIUrl":"https://doi.org/10.2526/JSEME.34.76_8","url":null,"abstract":"工業製品の生産は過去においては米国, 欧州, 日本が三大拠点であったが, 現在ではこれにアジアの諸国が加わってきた. しかもそれぞれの地域の生産能力や生産技術が向上して地域差が縮まり, さらに貿易障壁がなくなってきたため, 今や製造業においては厳しいグローバルな競争状態が日常的なものとなっている. 世界の中の最適な地で開発され生産された工業製品が世界中に供給される時代となりつつある. わが国は工業製品, とりわけ工業消費財の生産拠点として発展してきたが, 同時に抜群に強い輸出競争は激しい円高を生み, これが生産コストの上昇を招き, 多くの製造業が海外に工場を移すこととなった. さらに増え続ける自動車輸出により諸外国との貿易摩擦が広がり, 消費国に自動車工場をつくって現地で生産するようになっている. この間, 低成長時代の到来と共に長期にわたる経済不況が続き, 製造業にとって苦難の時代が続いてきた. これを打開するためにも新製品開発競争が激化し, このことは限られたマーケットに, 多様な製品が供給されることになり, かつての大量生産時代から多種少量生産時代に移ったと言われている. さらに, 物質的に豊かな時代となって消費者ニーズの多様化が進んだこと, また多くの工業製品に新技術が取り入れられて製品機能が年々高度化していることもあってこの多種少量生産に拍車をかけることとなっている. また, 販売量の予想が困難となり, さらに販売量の変動も大きく変化する時代となっている. したがって, 今や工業製品はあたかも流行商品のごとく, 多種変量生産の時代に突入したと言われており, 物づくりの技術者にとっては, ますます厳しい時代となっている. しかし, 同時にわが国は, このような多種変量生産時代に対応する高度な生産技術を確立しっつある世界の中で唯一の国となっている.","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127165891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Rapid Surface Finishing of Stainless Steel Plates by Electrochemical Machining Process 不锈钢板的电化学快速表面精加工

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-07-31 DOI: 10.2526/JSEME.34.76_26

K. Seimiya, T. Fujiwara

{"title":"Rapid Surface Finishing of Stainless Steel Plates by Electrochemical Machining Process","authors":"K. Seimiya, T. Fujiwara","doi":"10.2526/JSEME.34.76_26","DOIUrl":"https://doi.org/10.2526/JSEME.34.76_26","url":null,"abstract":"In this paper, the development of a rapid surface finishing method using an ECM process for stainless steel plates of standard size is described. Basic experiments are carried out first with a bar electrode 10mm wide and 3mm thick under a working gap of 0.2mm in order to establish the principle of the finishing process in which a stock removal rate of about 10μm/s is obtained. On the basis of the exprimental results, a trial apparatus which is designed for finishing stainless steel plates of the standard size of up to 5 feet in width is fabricated. It is equipped with a cylindrical electrode of 300mm in diameter to give the maximum peripheral velocity of 10m/s when rotated. Electrolyte is supplied to the working area by not only pumps but also tool rotation. Two masking sheets are extended upstream and downstream, respectively, to restrict the working area to between 8 and 12mm in length. Test runs are carried out to improve the gloss of SUS304 plates 4 feet wide and 8 feet long from the 2B to the BA finish level. The target level of gloss is realized under an electrode gap of 0.6mm with a feed rate of 600mm/min, applied voltage of 35 V and working current of 4000A.","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123332341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Accretion Machining by EDM with Thin Electrode (1st Report) 薄电极电火花吸积加工(第一期报告)

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-07-31 DOI: 10.2526/JSEME.34.76_34

H. Takezawa, N. Mohri, K. Furutani

引用次数: 0

Surface Modification Using EDM with Powder Suspended Dielectric 粉末悬浮介质电火花加工表面改性研究

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-03-30 DOI: 10.2526/JSEME.34.22

Toshitaka Satsuta, K. Hirai, M. Yoshizawa

{"title":"Surface Modification Using EDM with Powder Suspended Dielectric","authors":"Toshitaka Satsuta, K. Hirai, M. Yoshizawa","doi":"10.2526/JSEME.34.22","DOIUrl":"https://doi.org/10.2526/JSEME.34.22","url":null,"abstract":"In this study, EDM with a powder suspended dielectric has been applied in order to improve the surface quality of workpieces. WC(tungsten carbide) as a suspended powder and DC53(die steel for cold working) as workpieces were both adopted. Just after the WC powder was suspended into the dielectric, the surface of the workpiece was not modified but machined. As the discharge time for modification was accumulated, the surface became modified. After confirming that the surface was modified with the WC powder suspended dielectric, the effects of the discharge time per treatment on the characteristics of the modified layers were investigated. The longer the discharge time per treatment was, the harder the surface of the improved layer became. This is due to the increase of the produced amount of WCi-X. Ohgoshi wearing-out test was performed to evaluate the wear resistance of the improved layers. It revealed that the worn volume of the improved layer was decreased maximally by about 10% as compared to that of the base steel. key words: EDM, surface modification, powder, dielectric 1. 緒言放電加工法とは, 主として油や水などの液中で発生させたパルス放電を利用し, 材料を除去する加工法である. 近年, この液中でのパルス放電を表面改質に適用しようとする試みがなされている1)2). その主な手法としては, 放電の衝撃力を利用して電極材を工作物へ移行し改質層を形成する方法(以降, 電極材移行方式と記す), および放電加工油中に導電性粉末を混入し粉末成分により改質層を形成する方法(以降, 粉末混入方式と記す) の二つが挙げられる. 電極材移行方式は, 電極材と同一もしくはその炭化物からなる硬質膜を比較的厚く形成できるといった理由から, 精力的に研究が行われている3)4). 一方, 粉末混入方式は, 放電加工における仕上げ面粗さの改善5)といった観点から研究が開始されているための, 当初は表面改質に関する研究は少なく6), 近年になり研究例7)8)が増えてきた. 粉末混入方式では, 粉末を放電加工油中に混入することで, 工作物表面上に粉末成分を添加できる. このためその用途に応じて必要とされる, 母材とは異なる表面特性を簡便な手法で付与できる. また, 多成分からなる粉末を用いれば, 一度に多成分を工作物表面に移行できる. このように, 粉末混入方式では, 幅広い組成の改質層を簡便な方法で形成することが可能と思われる. そこで本研究では, 粉末混入方式を取り上げ, この方法により放電加工と関連の深い金型材へ硬質膜を形成することを試みた. 冷問 * 電気加工学会全国大会(1998)にて発表 **神奈川県産業技術総合研究所(海老名市下","PeriodicalId":269071,"journal":{"name":"Journal of the Japan Society of Electrical-machining Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2000-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122970332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Development of Electrical Discharge Coating Machine (EDCOAT) 电火花涂层机(EDCOAT)的研制

Journal of the Japan Society of Electrical-machining Engineers Pub Date : 2000-03-30 DOI: 10.2526/JSEME.34.38

A. Goto, T. Moro, K. Matsukawa

引用次数: 4